// Copyright (c) 2025, 大连理工大学 (Dalian University of Technology)
//
// Licensed under the Mulan PSL v2.
// You can use this file according to the terms and conditions of the Mulan PSL v2.
// You may obtain a copy of the License at
//
//     http://license.coscl.org.cn/MulanPSL2
//
// THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
// EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. SEE THE MULAN PSL v2
// FOR MORE DETAILS.

#include "DBManager/Repository/HDF5/Input/Partition/SET1Repository.h"

#include "DBManager/Repository/HDF5/Base/HDF5RepositoryMacro.h"

#include "SET1Repository.h"

HDF5_REG_REPOSITORY (SET1Repository)

using namespace SG::DBManager::HDF5;
using namespace SG::DBManager::HDF5::SET1;
using namespace SG::DataStructure::FEM;
using namespace SG::DataStructure::Common;

SET1Repository::SET1Repository (HDF5Database& database) : SG::DBManager::HDF5::MainlyRepositoryBase<SET1Data> (database)
{}

void SET1Repository::InitialDatasetInfo ()
{
    RegisterTableInfo<IDENTITY> ("/SG/INPUT/PARTITION/SET1/IDENTITY", MainDataset);
    RegisterTableInfo<I64>  ("/OWN/INDEX/INPUT/PARTITION/SET1", IndexDataset);
    RegisterTableInfo<I64> ("/SG/INPUT/PARTITION/SET1/GIDS", SubDataset);

    // 连接信号槽 当调用汇总的时候，将已有的缓存信息全部都持久化到HDF5文件中。
    GetDatabase ().GetHDF5Hub ()->m_constraintSummarySignal.connect ([this] { Sort (); });
}

void SET1Repository::DumpWriteCahce ()
{
    auto& writeStorage = this->GetMainCache ().m_writeStorage;

    // 设置为无顺序
    GetMainDatasetInfo ().SetIsSequential (false);

    // 主表数据
    std::vector<IDENTITY> IDENTITYData{};
    // 附表数据
    std::vector<I64> subData;

    // 转换为nastran格式数据
    OwnToNastran (writeStorage, IDENTITYData, subData);

    WriteData (MainDataset, IDENTITYData);
    WriteData (SubDataset, subData);

    // 更新Index表
    this->WriteIndexData (this->GetIndexDatasetInfo (), writeStorage);

    // 清空缓存
    writeStorage.clear ();
}

std::vector<SET1Repository::DataType>* SET1Repository::LoadReadCache (std::size_t loadIndex)
{
    std::vector<IDENTITY> IDENTITYData;
    LoadMainMetadata (loadIndex, IDENTITYData);

    if (IDENTITYData.empty ())
    {
        return nullptr;
    }

    std::vector<I64> subData;
    LoadSecondaryMetadata (IDENTITYData, GIDS_POS, GIDS_LEN, SubDataset, subData);

    auto* cacheVector = m_cacheHelper.LookupOrCreateVector<DataType> (GetMainCache ().m_readCacheKey, IDENTITYData.size ());
    NastranToOwn (IDENTITYData, subData, *cacheVector);
    return cacheVector;
}

void SET1Repository::SortData ()
{
    std::vector<IDENTITY> IDENTITYData;
    GetDataset (MainDataset).read (IDENTITYData);

    if (IDENTITYData.empty ())
    {
        GetMainDatasetInfo ().SetIsSequential (true);
        return;
    }

    std::vector<I64> subData;
    GetDataset (SubDataset).read (subData);

    // 将所有数据转换
    std::vector<SET1Data> AllData{};
    NastranToOwn (IDENTITYData, subData, AllData);

    // 排序
    std::sort (AllData.begin (), AllData.end ());

    // 转换回nastran格式
    OwnToNastran (AllData, IDENTITYData, subData, true);

    // 写出数据至文件
    GetDataset (MainDataset).write (IDENTITYData);
    GetDataset (SubDataset).write (subData);

    // 重写索引
    RewriteIndexData (AllData);

    // 设置为已顺序
    GetMainDatasetInfo ().SetIsSequential (true);
}
std::vector<SG::DataStructure::FEM::SET1Data> SET1Repository::GetAllData ()
{
    Sort ();

    std::vector<SET1Data> result;

    std::vector<SG::DBManager::HDF5::SET1::IDENTITY> IDENTITYData;
    GetDataset (MainDataset).read (IDENTITYData);

    if (IDENTITYData.empty ())
    {
        return result;
    }

    std::vector<SG::DataStructure::Common::Id>  subData;
    GetDataset (SubDataset).read (subData);

    // 将所有数据转换
    NastranToOwn (IDENTITYData, subData, result);

    return result;
}

void SET1Repository::OwnToNastran (std::vector<SG::DataStructure::FEM::SET1Data>&         own,
                                     std::vector<SG::DBManager::HDF5::SET1::IDENTITY>& _OUT IDENTITYData,
                                     std::vector<SG::DataStructure::Common::I64>& _OUT        subData,
                                     bool                                                     isSort)
{
    subData.clear ();
    IDENTITYData.clear ();
    IDENTITYData.reserve (own.size ());

    // 获取已有数据条数，主要是放在主表的POS字段
    // 如果是重新排序的时候，Pos都是从0 开始的
    size_t count = isSort ? 0 : this->GetDatasetInfo (SubDataset).GetRowCount ();

    // OwnIdent 代表咱们自己的数据结构
    // NasIdent 代表nastran的数据结构
    for (auto& OwnIdent : own)
    {
        // 写入附表
        subData.insert (subData.end (), OwnIdent.m_gids.begin (), OwnIdent.m_gids.end ());

        const size_t len = OwnIdent.m_gids.size ();

        // 写入IDENTITY
        IDENTITY NasIdent{};
        NasIdent.SID       = OwnIdent.m_id;
        NasIdent.GIDS_POS     = static_cast<SG::DataStructure::Common::I64> (count);
        NasIdent.GIDS_LEN     = static_cast<SG::DataStructure::Common::I64> (len);
        NasIdent.DOMAIN_ID = OwnIdent.m_domainId;
 
        IDENTITYData.emplace_back (NasIdent);

        count += len;
    }
}

void SET1Repository::NastranToOwn (std::vector<SG::DBManager::HDF5::SET1::IDENTITY>&   IDENTITYData,
                                     std::vector<SG::DataStructure::Common::I64>&          subData,
                                     std::vector<SG::DataStructure::FEM::SET1Data>& _OUT own)
{
    own.clear ();
    own.reserve (IDENTITYData.size ());

    // 代表初始的Index 位置, 因为数据有可能是截取了附表的一部分，所有主表中根据POS找的时候需要对应一下，
    // 比如第一个主表数据中POS字段为10000， 附表的vector的数据 就是从附表中的第10000个开始对应的 也就是Index==0的
    const SG::DataStructure::Common::I64 index = IDENTITYData[0].GIDS_POS;

    SET1Data const tempown;
    own.resize (IDENTITYData.size (), tempown);

    for (size_t i = 0; i < IDENTITYData.size (); i++)
    {
        auto& OwnIdent = own[i];
        auto& NasIdent = IDENTITYData[i];

        OwnIdent.m_id      = NasIdent.SID;
        OwnIdent.m_domainId = NasIdent.DOMAIN_ID;

        if (NasIdent.GIDS_LEN != 0)
        {
            OwnIdent.m_gids.assign (subData.begin () + NasIdent.GIDS_POS - index,
                                       subData.begin () + NasIdent.GIDS_POS + NasIdent.GIDS_LEN - index);
        }
    }
}
